Self-filling fountain-pen.



No. 787,152. FATENTED AFR.11, 1905. J. T. DAVISGN.

SELF FILLING FOUNTAIN PEN.

APPLICATION .FILED NOV. 19, 1904.

@un/hmz oo e o 511 vente@ gig/125m; 51,* ma.

Patented April 11, l 905.

UNTTeD STATES PATENT OFFICE,

JOHN T. DAVISON, OF BROOKLYN, NICl'V YORK.

SELF-FILLING FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 787,152, dated April11, 1905.

Application letl November 19,1904. Serial No. 233,436.

To /r// /r/m/l/rv if 71ml/ collec/11:

Be it known that l, Jonx T. Ylhvrsox, a citizen of the United States,residing in the boroughof Brooklyn, county of Kings, and State of NewYork, have invented certain new and useful Improvements in Self-FillingFountain-Pens, of which the Vfollowing is a specilication.

Ally present invention relates to improvements in fountain-pens` andmore particularly to that class of fountain-pensknown selffillingfountain-pens.

'l`he object of my invention is to provide an improved fountain-pen ofthis specific class which will be simple in construction` durable, andeffective in operation.

lleretofore in the making of self-filling fountain-pens it has beencustomary to 4employ a flexible reservoir, which is compressed to expelair therefrom when it is desired to lill the pen with ink, the pen thenbeing' inserted in a body of inl( and the reservoir being allowed toexpand, drawing the ink into the same. ln some instances the reservoirhas been compressed by hand, while in others devices have been contrivedVfor the purpose of mechanically compressing the reservoir.

'lhe object of my invention is to provide an improvement on thislatterclass of compressing devices wherein a very simple device isemployed for the purpose of creating an equal pressure throughout theentire length of the reservoir. Such a device is clearlyshown in theacconn)anying drawings and described in the following specification, inboth of which like reference-numerals refer to like parts.

in said drawings` Figure 1 is a transverse section through afountain-pen embodying my improved self-filling mechanism, showing theparts in a position of rest; and Fig. 2 is a similar section, slightlyenlarged, with the protect-ingrap of the pen removed` showing the partsin operated position.

Referring now in detail to the drawings, l represents the casing of aYfountain-pen embodying my invention, carrying at its forward end thepen 2, seated ina plug 3, carrying a flexible reservoir l of suitablelength, lying longittnlinally within the casing 1. At

the end of the casing 1 opposite to the penpoint Q the diameter of thecasingis decreased to receive a tubular wedge-plug 5, forming a seat fora press-button (S, with a shank ti' sliding in said plug The shank t3has seated in its inner end a spring-rod T. extending upwardly and thentoward pen Q, abutting at its opposite end the end of the plug 3 andresting on a retaining-ring l1 for retaining reservoir on plug 2S andfor preventing the end of rod T from punctnring reservoir l. Suitablysecured to the spring-rod T is an equalizing compressor-plate 8, restingagainst the wall of the reservoir l.

i) is a protecting-cap threaded upon the end of the casing Vl over thebutton 6 to prevent access of dust and other foreign matter into theeasing l past the plug and to prevent, on the other hand,' any leakagewhich might occur in the reservoir 4 from escaping from the casing, and.furthermore, to prevent accidental or unintended movement of the button43.

l() is a customary protecting-cap for the pen-point, which is insertedover the button end of the pen when the pen is in use.

The device described is operated as follows: ll'hen it is desired torefill the pen, the caps 10 and t) are removed and the button (5depressed with the thumb or linger of the operator bowing the spring-rodT, forcing the equaliZing-plate S against the reservoir 4 to create aneven pressure on said reservoir l throughout its length and tocompletely deflate the same. 'lhe pen-point is then inserted in a bodyof ink, the button (S released, allowing rod 7 to resume itsstraightened or normal position, permitting the reservoir l, by reasonof the elasticity of its wall, to resume its extended shape, and therebycreating a suction through the mouth of the reservoir, which will drawink past the pen-point 2 and into the reservoir -t until thc latter isfilled.

f The plug 5 being' held in the casing l by friction rather than b vmeans of screw-threads is removed therefrom by a pull with possibly aslight twist. This obviates the tendency of the spring-rod T and thereservoir 1 to become entangled and twisted upon revolving the plug 5 toremove the same were the same screw-threatled in casing l.

CIJ

IOO

Having thus described my invention, tbe following is what l claim as newtherein and desire to secure by Letters Patent:

l. A fountain-pen, comprising a casing, a pen-plug seated in tbe end ofsaid casing, a ilexible reservoir mounted on said plug, a press-buttonat the opposite end of said casing` a spring-rod seated in saidpress-button and abutting' said pen-plug, and an equalizing-platecarried b y said spring-rod and resting against tbe wall of saidreservoir.

2. A fountain-pen, comprising a casing, a pen-plug, and a exiblereservoir connected to said pen-plug, a press-button seated in saidcasing, a spring-rod seated in said press-button, means preventingmovement of said rod longitudinally,and an equaliZing-plate carried bysaid rod and resting against the wall of said reservoir.

3. A fountain-pen, comprising a casing, a pen-plug, and a flexiblereservoir connected to said penplug, a spring-rod mounted between thecasing and tbe reservoir, an equaliZing-plate Carried by tbe spring-rod,and means for bowing the spring-rod for forcing said equaliZing-plateagainst the reservoir to deflate thesame.

4. A fountain-pen, comprising a easing, a pen-plug, a leXible reservoirconnected to said pen-plug, a spring-rod mounted between the casing and`reservoir, means preventing longitudinal movement of said rod, apressbutton connected to said' rod, and an equalizing-plateJ carried bythe spring-rod and bearing against tbe wall of tbe reservoir.

5. A fountain-pen, comprising a easing. a pen-plug, and a flexiblereservoir connected to said pen-plug, in combination with a plugfriotionally seated in said casing, a button sliding in said plug, aspring-rod mounted between tbe casing and the reservoir and seated insaid button, an equalizing-plate carried by the spring-rod, and meansfor bowing the springrod to forceA said equalizing plate against thereservoir to deflate the same.

JOHN T. DAvlsoNl Witnesses:

SAMUEL J. HOEXTER, HARRY A. KNIGHT.

